By Wendi Silvano, School Specialty Publishing
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Additional resources for Hands-On Chemistry Experiments, Grades K-2
Stir until mostly dissolved. 3. Cut a circle of black paper to fit inside the margarine tub lid. Tape it inside the lid. 4. Slowly pour a thin layer of the epsom solution over the paper. 5. Set it where it will not be disturbed for several days. 6. Observe the crystals that remain after the water evaporates, if possible with a magnifying glass. Let’s Talk About It: How did we get the solute (epsom salt) out of the solution? ) What is left? (epsom salt crystals). • Magnifying glass, if available • Rulers and crayons • Copy of page 41 for each student © McGraw-Hill Children’s Publishing © School Specialty Publishing 40 0-7424-2746-3 Hands-On Chemistry Experiments 17 Mixtures and Solutions Name ___________________________________ Date ________________ Straight Line Art The crystals we made are all thin, straight lines.
If it is too sticky, add a little more flour. 5. After experimenting with the play clay, store it in a resealable plastic bag. Let’s Talk About It: Is there still flour, salt, and water in our play clay? (Yes) The flour, salt, and water are mixed together, but each one still has the same chemical properties as before. This is called a mixture. ” © McGraw-Hill Children’s Publishing © School Specialty Publishing 32 0-7424-2746-3 Hands-On Chemistry Experiments 13 Mixtures and Solutions Name ___________________________________ Date ________________ Mixtures on the Menu Many of the foods we eat are mixtures.
____________________________________ © McGraw-Hill Children’s Publishing © School Specialty Publishing 37 0-7424-2746-3 Hands-On Chemistry Experiments Mixtures and Solutions Experiment 16 Goop Substances interact with other substances—exploring a unique mixture. What happens when cornstarch is mixed with water? What to Do: • Paper towels 1. Pour about 1 ⁄2 to 3⁄4 cup of cornstarch into the pie plates. 2. Mix in water, a little at a time, until the goop is thick enough that, when you roll it in your palms, it forms a ball.